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kernel 3.13: freeze 10sec after boot( if run something with discrete card, do not freeze)
like

Code:

DRI_PRIME=1 glxgears

Of course that defeats the purpose of runtime power management, since the reason that it doesn't crash on 3.13 when you're running glxgears on the discrete card is because it's not actually turning off.

Thank you for your fast reply. I saw a couple of bug repots with this commit mentioned.
Does it mean that vga_switcheroo should be changed in order to work with this commit or the guys from Intel should fix acpi behavior?
I guess current problem affects all laptop users who tries to save the energy by disabling the discrete card.